Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG

A method for the preparation of stable 100-160-nm-sized quasi-2D branched palladium islands on highly oriented pyrolitic graphite (HOPG) is described. This type of island is electrodeposited from an aqueous acidic palladium chloride solution containing an excess of sodium perchlorate at potentials j...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Gimeno, Y., Hernández Creus, A., González, S., Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Exactas
Química
Grafito
Paladio
Catálisis
Hidrógeno
Electrodos
electrodeposition
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87924
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87924
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Grafito
Paladio
Catálisis
Hidrógeno
Electrodos
electrodeposition
spellingShingle Ciencias Exactas
Química
Grafito
Paladio
Catálisis
Hidrógeno
Electrodos
electrodeposition
Gimeno, Y.
Hernández Creus, A.
González, S.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
topic_facet Ciencias Exactas
Química
Grafito
Paladio
Catálisis
Hidrógeno
Electrodos
electrodeposition
description A method for the preparation of stable 100-160-nm-sized quasi-2D branched palladium islands on highly oriented pyrolitic graphite (HOPG) is described. This type of island is electrodeposited from an aqueous acidic palladium chloride solution containing an excess of sodium perchlorate at potentials just a few millivolts above the threshold potential of the hydrogen evolution reaction. Each branched palladium island consists of a central 3D core and large quasi-2D branches that form a dense radial pattern. In contrast to massive palladium, branched islands exhibit enhanced electrocatalytic properties for the hydrogen atom electroadsorption/electrodesorption reaction and the electrooxidation reaction of hydrazine. This enhancement is mainly related to the fractal characteristics of branched palladium islands on HOPG.
format Articulo
Articulo
author Gimeno, Y.
Hernández Creus, A.
González, S.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_facet Gimeno, Y.
Hernández Creus, A.
González, S.
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_sort Gimeno, Y.
title Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
title_short Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
title_full Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
title_fullStr Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
title_full_unstemmed Preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on HOPG
title_sort preparation of 100−160-nm-sized branched palladium islands with enhanced electrocatalytic properties on hopg
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/87924
work_keys_str_mv AT gimenoy preparationof100160nmsizedbranchedpalladiumislandswithenhancedelectrocatalyticpropertiesonhopg
AT hernandezcreusa preparationof100160nmsizedbranchedpalladiumislandswithenhancedelectrocatalyticpropertiesonhopg
AT gonzalezs preparationof100160nmsizedbranchedpalladiumislandswithenhancedelectrocatalyticpropertiesonhopg
AT salvarezzarobertocarlos preparationof100160nmsizedbranchedpalladiumislandswithenhancedelectrocatalyticpropertiesonhopg
AT arviaalejandrojorge preparationof100160nmsizedbranchedpalladiumislandswithenhancedelectrocatalyticpropertiesonhopg
bdutipo_str Repositorios
_version_ 1764820489495117824

Ejemplares similares